这是我的作业，是当时全班最好的，最短路径演示系统，能自定义节点和路径，显示出最短路径，节点用了组件，整个程序用了皮肤组件。-This is my work, then the whole class is the best, shortest path demonstration system can be defined nodes and trails. show that the shortest path, using a node components, with the whole